C++ (Cpp) strm_free_buffer Examples

Example #1

File: dspapi.c Project: MiniBlu/cm11_kernel_htc_msm8974a3ul

u32 strmwrap_free_buffer(union trapped_args *args, void *pr_ctxt)
{
    int status = 0;
    u8 **ap_buffer = NULL;
    u32 num_bufs = args->args_strm_freebuffer.num_bufs;
    struct strm_res_object *strm_res;

    find_strm_handle(&strm_res, pr_ctxt,
                     args->args_strm_freebuffer.stream);

    if (!strm_res)
        return -EFAULT;

    if (num_bufs > MAX_BUFS)
        return -EINVAL;

    ap_buffer = kmalloc((num_bufs * sizeof(u8 *)), GFP_KERNEL);
    if (ap_buffer == NULL)
        return -ENOMEM;

    CP_FM_USR(ap_buffer, args->args_strm_freebuffer.ap_buffer, status,
              num_bufs);

    if (!status)
        status = strm_free_buffer(strm_res,
                                  ap_buffer, num_bufs, pr_ctxt);

    CP_TO_USR(args->args_strm_freebuffer.ap_buffer, ap_buffer, status,
              num_bufs);
    kfree(ap_buffer);

    return status;
}

Example #2

File: strm.c Project: 119-org/hi3518-osdrv

/*
 *  ======== strm_allocate_buffer ========
 *  Purpose:
 *      Allocates buffers for a stream.
 */
int strm_allocate_buffer(struct strm_res_object *strmres, u32 usize,
				u8 **ap_buffer, u32 num_bufs,
				struct process_context *pr_ctxt)
{
	int status = 0;
	u32 alloc_cnt = 0;
	u32 i;
	struct strm_object *stream_obj = strmres->stream;

	DBC_REQUIRE(refs > 0);
	DBC_REQUIRE(ap_buffer != NULL);

	if (stream_obj) {
		/*
		 * Allocate from segment specified at time of stream open.
		 */
		if (usize == 0)
			status = -EINVAL;

	} else {
		status = -EFAULT;
	}

	if (status)
		goto func_end;

	for (i = 0; i < num_bufs; i++) {
		DBC_ASSERT(stream_obj->xlator != NULL);
		(void)cmm_xlator_alloc_buf(stream_obj->xlator, &ap_buffer[i],
					   usize);
		if (ap_buffer[i] == NULL) {
			status = -ENOMEM;
			alloc_cnt = i;
			break;
		}
	}
	if (status)
		strm_free_buffer(strmres, ap_buffer, alloc_cnt, pr_ctxt);

	if (status)
		goto func_end;

	drv_proc_update_strm_res(num_bufs, strmres);

func_end:
	return status;
}